MESON Chess Problem Database
Problem Display
PID: 247662 (5B2/2pp2K1/2nrk3/1RQ1n1p1/3p4/3P2N1/4N3/8 w - - 0 1)
Jacobs, Walter William
British Chess Magazine, 1932
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Qxd5#
- 1...Sxd3
- 2.Qf5#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qf5#
- 1...Sg4
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sf7
- 2.Qf5#
- 1...Sb4
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sa7
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...g4
- 2.Sf4#
- 1...Rd5
- Tries
- 1.Sc1?
- 1...Sxd3
- 2.Qf5#
- 1...Rd5
- 2.Qxd5#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qf5#
- 1...Sg4
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sf7
- 2.Qf5#
- 1...Sb4
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sa7
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...g4!
- 1...Sxd3
- 1.Sg1?
- 1...Sxd3
- 2.Qf5#
- 1...Rd5
- 2.Qxd5#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qf5#
- 1...Sg4
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sf7
- 2.Qf5#
- 1...Sb4
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sa7
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...g4!
- 1...Sxd3
- 1.Sxd4+?
- 1...Sxd4
- 2.Qxe5#
- 1...Rxd4!
- 1...Sxd4
- 1.Bxd6?
- threat
- 2.Qd5#
- 1...Sb4
- 2.Sxd4#
- 2.Qxe5#
- 1...Se7
- 2.Sxd4#
- 2.Qxe5#
- 1...cxd6!
- threat
- 1.Ra5?
- 1...Sxd3
- 2.Qf5#
- 1...g4
- 2.Sf4#
- 1...Rd5
- 2.Qxd5#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qf5#
- 1...Sg4
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sf7
- 2.Qf5#
- 1...Sb4
- 2.Qxe5#
- 1...Sa7
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...Sxa5!
- 1...Sxd3
- 1.Qc4+?
- 1...Rd5
- 2.Qxd5#
- 1...Sxc4!
- 1...Rd5
- 1.Sc1?
- Keys
- 1.Rb6!
- 1...Sxd3
- 2.Qf5#
- 1...cxb6
- 2.Qxd6#
- 1...g4
- 2.Sf4#
- 1...Rd5
- 2.Qe7#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qf5#
- 1...Sg4
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sf7
- 2.Qf5#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...Sxd3
- 1.Rb6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::QAB1(E),XR(e)
- S(b);OGATE,XP(B)::QAB1(E)
- S(b);OGATE::QAB1(E)
- S(d);N_GUARD::QAR1(E),XS(b)
- P(c);N_GUARD::S(A)
- Tries
- Try
- S(A);
- Vars
- S(b);OGATE,XP(B)::QAB1(E)
- R(e);N_GUARD::QAB1(E),XR(e)
- S(b);OGATE::QAB1(E)
- S(d);N_GUARD::QAR1(E),XS(b)
- Refutation
- P(c);
- Try
- S(A);
- Vars
- S(b);OGATE,XP(B)::QAB1(E)
- R(e);N_GUARD::QAB1(E),XR(e)
- S(b);OGATE::QAB1(E)
- S(d);N_GUARD::QAR1(E),XS(b)
- Refutation
- P(c);
- Try
- S(A);CHECK,XP(a)
- Vars
- S(d);XS(A)::QAR1(E),XS(b)
- Refutation
- R(e);XS(A)
- Try
- B(G);XR(e)
- Threat
- QAB1(E)
- Refutation
- P(g);XB(G)
- Try
- R(D);
- Vars
- S(b);OGATE,XP(B)::QAB1(E)
- P(c);N_GUARD::S(A)
- R(e);N_GUARD::QAB1(E),XR(e)
- S(b);OGATE::QAB1(E)
- S(d);N_GUARD::QAR1(E),XS(b)
- Refutation
- S(d);XR(D)
- Try
- Q(E);CHECK
- Vars
- R(e);N_GUARD,P_SPINR(e)::QAB1(E),XR(e)
- Refutation
- S(b);XQ(E)
- Try
- Actual
- R(D);
- Vars
- S(b);OGATE,XP(B)::QAB1(E)
- P(g);N_GUARD,XR(D)::QAR1(E),XR(e)
- P(c);N_GUARD::S(A)
- R(e);OGATE,P_SPINS(d),SBLOCK::QAR1(E)
- S(b);OGATE::QAB1(E)
- S(d);N_GUARD,P_SPINR(e)::S(A),XP(a)
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